Currently running an AE86 4age bigport bluetop engine and T50 22spline 5speed gearbox.
This engine really needs to have cam clearances adjusted as it rattles big time. good enough for a 15.7sec 1/4 mile though.
4agzte Build Log: Latest at top...
bought 16v smallport water pump, backing plate and steel intake pipe. 20v water pump impeller sticks out further from the pump housing than the 16v one.. so not a direct bolt in to the 16v backing plate. 16v pump could be used, tho need to grind a rib off where the cambelt cover sits on. I've now turned (in a lathe) the backing plate to accept a std 20v water pump, so it can be an off the shelf replacement in future. When fitted up with steel 16v n/a intake pipe, the charger contacts the pipe when pulled close to the block.. but 4agze intake pipe is shaped different and clears it. The 20v knock sensor now removed to be able to pull charger in fully. Will need to drill/tap the knock sensor thread in between cyl 3 & 4 (as found on 4agze), the boss is there to do it.
Looking into the use of the 16v fwd water pump and steel intake pipe rather than the 20v one. For reliability of steel rather than a rubber hose that can burst since it's hidden away under the charger and quad throttles. Found out the 4agze steel pipe drops down to clear the sc12's intake pipe before heading out to the rear, whereas fwd 16v bends away from the block before heading rearwards which contacts the sc. A solution to this is fabricate a stainless pipe from the water pump which can then be adapted to suit a remote thermostat. (a la ae82, ae92 or ae101). A rwd type 4age thermostat housing wont fit together with the supercharger.. I've bought another sc12 suitable for parts off trademe, if only the guy would finish the trade!! :(
rebuilding sc12 electromagnetic clutch... have skimmed the clutch surfaces as theres plenty life left in it.. but because the pulley bearing shat itself. seized up and spun on the shaft.. the shaft is now 0.2mm worn.. It's also cooked the coil. I was quoted an estimated $654 from toyota for new coil or $320 to have it rewound at local armature rewinders. doh its cheaper to buy a second hand charger. Now looking for replacement coil.. will lock the clutch solid in the mean time.
the pulley bearing is a double row deep groove sealed.. measuring 30id 47od 22.5wide.
 
Bought a oem 4age oil cooler sandwich plate.. this looks similar to the 20v oil filter spacer except has a thermostatic bypass valve to direct hot oil to a cooler. Two bolts are slightly wider apart otherwise the top half would interchange with the std 20v one. Also bought an oil cooler return fitting off the sump of a 7mgte so i'll drill a hole in the top of the 20v sump and weld a nut behind it to screw into. The turbo oil drain will be a separate fitting back to the sump.
Have modified the bottom s/c mount by milling 8mm off the underside of the bolt hole sharing the ae86 engine mount bracket so that the s/c mount sits on top of the engine mount.. lets see how many times i can say mount? it bolts up nicely anyways. A custom s/c top mount is required and can either be mounted off the intake manifold bolts or trumpet, or off the front of the engine where the alternator adjusting bracket would usually bolt to (in pic). You could modify the alternator bracket which has a spot for the dipstick tube to bolt to also.
  
A quick bolt together shows the supercharger fits under the quad throttles ok, but with the water pump-to-head pipe removed as it interferres. Will need to make a new top mount for the s/c. Using the std sc outlet pipe leaves no room for the knock sensor plug. there's enough room for a water pump pipe to come straight out under the intake but is cramped to try get it up to the head. The sc bottom mount bolts directly to the block. One of these bolts shares with the ae86 engine mount which also bolts directly to the block.. so one has to be modified.. and since the sc mount is thicker and has less load on it, seems ok to mill the back off it to mount on top of the engine mount.
 
Sourcing parts at this stage...
So far have bought a 4age blacktop 20v head with 45mm quad throttles, silvertop 20v block and internals, LX80 2L-T turbo-diesel diaphragm operated control valve, ae101 SC12 roots supercharger and mounts.
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4age 20v blacktop |
20v silvertop block |
2L-T control valve |
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